Cassowary is an incremental constraint solving toolkit that efficiently
solves systems of linear equalities and inequalities. Constraints may be
either requirements or preferences. Client code specifies the constraints
to be maintained, and the solver updates the constrained variables to have
values that satisfy the constraints. Version 0.50 of the solving toolkit
adds support for a one-way finite domain subsolver.
This project is concerned with offering a ruby interface for the
original implementation of cassowary in C.